Whois allows the user to lookup the Regional Internet Regsitry (RIR) information for a given IP Address, also returning the contact information for that IP Address.
Designed to find the names of all the routers an IP packet passes through on its way from your Mac to a destination host.
Ipfw firewall management frontend with bandwidth tuning, NAT setup, port redirection...
QuickWho provides a rich array of information about specific Internet domains that surpasses other command-line, GUI or web-based "whois" tools.
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